Stackable building panel pass-through fixture



FIG. 1 is a front three-quarter perspective view embodying my new design;

FIG. 2 is a front plan view;

FIG. 3 is a left side plan view;

FIG. 4 is a right side plan view;

FIG. 5 is a top plan view; and,

FIG. 6 is a bottom plan view. 

The ornamental design for a stackable building panel pass-through fixture, as shown. 